The sensor data sheet clearly state that 2592x1944 only works at 15 fps
make sure we don't try to miss configure the pll out of acceptable
range.

Signed-off-by: Benoit Parrot <bpar...@ti.com>
Reviewed-by: Jacopo Mondi <jac...@jmondi.org>
---
 drivers/media/i2c/ov5640.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 5cebad151546..8ffb3a55ca27 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -1611,6 +1611,11 @@ ov5640_find_mode(struct ov5640_dev *sensor, enum 
ov5640_frame_rate fr,
            !(mode->hact == 640 && mode->vact == 480))
                return NULL;
 
+       /* 2592x1944 only works at 15fps max */
+       if ((mode->hact == 2592 && mode->vact == 1944) &&
+           fr > OV5640_15_FPS)
+               return NULL;
+
        return mode;
 }
 
-- 
2.17.1

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